X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fmtd%2Fredboot.c;h=c077d2ec9cddbe5ca19fba9e7acb53f20ed4e890;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=13f9e992bef8bb0bc5b5801a1dd9207bdeb2b85e;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c
index 13f9e992b..c077d2ec9 100644
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -1,5 +1,5 @@
 /*
- * $Id: redboot.c,v 1.17 2004/11/22 11:33:56 ijc Exp $
+ * $Id: redboot.c,v 1.19 2005/12/01 10:03:51 dwmw2 Exp $
  *
  * Parse RedBoot-style Flash Image System (FIS) tables and
  * produce a Linux partition array to match.
@@ -39,7 +39,7 @@ static inline int redboot_checksum(struct fis_image_desc *img)
 	return 1;
 }
 
-static int parse_redboot_partitions(struct mtd_info *master, 
+static int parse_redboot_partitions(struct mtd_info *master,
                              struct mtd_partition **pparts,
                              unsigned long fis_origin)
 {
@@ -85,12 +85,32 @@ static int parse_redboot_partitions(struct mtd_info *master,
 
 	numslots = (master->erasesize / sizeof(struct fis_image_desc));
 	for (i = 0; i < numslots; i++) {
-		if (buf[i].name[0] == 0xff) {
-			i = numslots;
+		if (!memcmp(buf[i].name, "FIS directory", 14)) {
+			/* This is apparently the FIS directory entry for the
+			 * FIS directory itself.  The FIS directory size is
+			 * one erase block; if the buf[i].size field is
+			 * swab32(erasesize) then we know we are looking at
+			 * a byte swapped FIS directory - swap all the entries!
+			 * (NOTE: this is 'size' not 'data_length'; size is
+			 * the full size of the entry.)
+			 */
+			if (swab32(buf[i].size) == master->erasesize) {
+				int j;
+				for (j = 0; j < numslots && buf[j].name[0] != 0xff; ++j) {
+					/* The unsigned long fields were written with the
+					 * wrong byte sex, name and pad have no byte sex.
+					 */
+					swab32s(&buf[j].flash_base);
+					swab32s(&buf[j].mem_base);
+					swab32s(&buf[j].size);
+					swab32s(&buf[j].entry_point);
+					swab32s(&buf[j].data_length);
+					swab32s(&buf[j].desc_cksum);
+					swab32s(&buf[j].file_cksum);
+				}
+			}
 			break;
 		}
-		if (!memcmp(buf[i].name, "FIS directory", 14))
-			break;
 	}
 	if (i == numslots) {
 		/* Didn't find it */
@@ -104,7 +124,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
 		struct fis_list *new_fl, **prev;
 
 		if (buf[i].name[0] == 0xff)
-			break;
+			continue;
 		if (!redboot_checksum(&buf[i]))
 			break;